help needed on tilemap collider

im currently working on infinite runner on 2D and i created a 3 platform with the same x value but different in y values. the player can just jump through it and fall over by the help of platform effector. i also created a script that spawn this platforms using the prefab i created. the problem is my player cant jump through or fall down when it is near the edge of both collider. please help.

btw composite collider dosen't work. thank you for the help